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#!/usr/bin/env python
#
# Copyright 2014 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
from gnuradio import gr, gr_unittest
import fec_swig as fec
import blocks_swig as blocks
from collections import deque
class test_depuncture (gr_unittest.TestCase):
def depuncture_setup(self):
p = []
for i in range(self.puncsize):
p.append(self.puncpat >> (self.puncsize - 1 - i) & 1)
d = deque(p)
d.rotate(self.delay)
_puncpat = list(d)
k = 0
self.expected = []
for n in range(len(self.src_data)/(self.puncsize - self.puncholes)):
for i in range(self.puncsize):
if _puncpat[i] == 1:
self.expected.append(self.src_data[k]);
k+=1
else:
self.expected.append(self.sym)
def setUp(self):
self.src_data = 2000*range(64)
self.tb = gr.top_block ()
def tearDown(self):
self.tb = None
def test_000(self):
# Test normal operation of the depuncture block
self.puncsize = 8
self.puncpat = 0xEF
self.delay = 0
self.sym = 0
self.puncholes = 1
self.depuncture_setup()
src = blocks.vector_source_b(self.src_data)
op = fec.depuncture_bb(self.puncsize, self.puncpat,
self.delay, self.sym)
dst = blocks.vector_sink_b()
self.tb.connect(src, op, dst)
self.tb.run()
dst_data = list(dst.data())
for i in xrange(len(dst_data)):
dst_data[i] = int(dst_data[i])
self.assertEqual(self.expected, dst_data)
def test_001(self):
# Test normal operation of the depuncture block with a delay
self.puncsize = 8
self.puncpat = 0xEF
self.delay = 1
self.sym = 0
self.puncholes = 1
self.depuncture_setup()
src = blocks.vector_source_b(self.src_data)
op = fec.depuncture_bb(self.puncsize, self.puncpat,
self.delay, self.sym)
dst = blocks.vector_sink_b()
self.tb.connect(src, op, dst)
self.tb.run()
dst_data = list(dst.data())
for i in xrange(len(dst_data)):
dst_data[i] = int(dst_data[i])
self.assertEqual(self.expected, dst_data)
def test_002(self):
# Test scenario where we have defined a puncture pattern with
# more bits than the puncsize.
self.puncsize = 4
self.puncpat = 0x5555
self.delay = 0
self.sym = 0
self.puncholes = 2
self.depuncture_setup()
src = blocks.vector_source_b(self.src_data)
op = fec.depuncture_bb(self.puncsize, self.puncpat,
self.delay, self.sym)
dst = blocks.vector_sink_b()
self.tb.connect(src, op, dst)
self.tb.run()
dst_data = list(dst.data())
for i in xrange(len(dst_data)):
dst_data[i] = int(dst_data[i])
self.assertEqual(self.expected, dst_data)
def test_003(self):
# Test scenario where we have defined a puncture pattern with
# more bits than the puncsize with a delay. The python code
# doesn't account for this when creating self.expected, but
# this should be equivalent to a puncpat of the correct size.
self.puncsize = 4
self.puncpat0 = 0x5555 # too many bits set
self.puncpat1 = 0x55 # num bits = puncsize
self.delay = 1
self.sym = 0
src = blocks.vector_source_b(self.src_data)
op0 = fec.depuncture_bb(self.puncsize, self.puncpat0,
self.delay, self.sym)
op1 = fec.depuncture_bb(self.puncsize, self.puncpat1,
self.delay, self.sym)
dst0 = blocks.vector_sink_b()
dst1 = blocks.vector_sink_b()
self.tb.connect(src, op0, dst0)
self.tb.connect(src, op1, dst1)
self.tb.run()
dst_data0 = list(dst0.data())
for i in xrange(len(dst_data0)):
dst_data0[i] = int(dst_data0[i])
dst_data1 = list(dst1.data())
for i in xrange(len(dst_data1)):
dst_data1[i] = int(dst_data1[i])
self.assertEqual(dst_data1, dst_data0)
def test_004(self):
# Test normal operation of the depuncture block without
# specifying the fill symbol (defaults to 127).
self.puncsize = 8
self.puncpat = 0xEF
self.delay = 0
self.sym = 127
self.puncholes = 1
self.depuncture_setup()
src = blocks.vector_source_b(self.src_data)
op = fec.depuncture_bb(self.puncsize, self.puncpat,
self.delay)
dst = blocks.vector_sink_b()
self.tb.connect(src, op, dst)
self.tb.run()
dst_data = list(dst.data())
for i in xrange(len(dst_data)):
dst_data[i] = int(dst_data[i])
self.assertEqual(self.expected, dst_data)
if __name__ == '__main__':
gr_unittest.run(test_depuncture, "test_depuncture.xml")
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